package com.company.section4;

/**
 * @author cbf4Life cbf4life@126.com
 * I'm glad to share my knowledge with you all.
 */
public class Client {

    public static void main(String[] args) {
        //创建一个被观察者
        ConcreteSubject subject = new ConcreteSubject();
        //定义一个观察则
        Observer obs = new ConcreteObserver();
        //观察者观察被被观察则
        subject.addObserver(obs);
        //观察者开始活动了
        subject.doSomething();
    }


}
